The Equation Quick Guide covers fan laws, sheave sizing, density, humidification, psychrometric properties of air and water, pump laws, cooling towers, and electrical equations. It also includes, duct calculations, electrical distribution systems, conversion factors, altitude correction factors, suggested terminal unit primary inlet velocities, and a velocity pressure conversion table for standard air. This high-quality guide features a tabbed structure for quick reference, durable construction, and provides reader-friendly content in an easy to carry format.